/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.tools;

import org.apache.iotdb.commons.file.SystemFileFactory;
import org.apache.iotdb.db.engine.storagegroup.TsFileResource;
import org.apache.iotdb.db.utils.DateTimeUtils;
import org.apache.iotdb.tsfile.fileSystem.FSFactoryProducer;

import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Comparator;

/**
 * This tool can analyze the tsfile.resource files from a folder, or analyze a single
 * tsfile.resource file.
 */
public class TsFileResourcePrinter {

    @SuppressWarnings("squid:S106")
    public static void main(String[] args) throws IOException {

        String folder = "data/data/sequence/root.group_1/0";
        if (args.length >= 1) {
            folder = args[0];
        }
        File folderFile = SystemFileFactory.INSTANCE.getFile(folder);
        if (folderFile.isDirectory()) {
            // analyze the tsfile.resource files from a folder
            File[] files =
                    FSFactoryProducer.getFSFactory()
                            .listFilesBySuffix(folderFile.getAbsolutePath(), ".tsfile.resource");
            Arrays.sort(files, Comparator.comparingLong(x -> Long.valueOf(x.getName().split("-")[0])));

            for (File file : files) {
                printResource(file.getAbsolutePath());
            }
            System.out.println("Analyzing the resource file folder " + folder + " finished.");
        } else {
            // analyze a tsfile.resource file
            printResource(folderFile.getAbsolutePath());
            System.out.println("Analyzing the resource file " + folder + " finished.");
        }
    }

    @SuppressWarnings("squid:S106")
    public static void printResource(String filename) throws IOException {
        filename = filename.substring(0, filename.length() - 9);
        TsFileResource resource = new TsFileResource(SystemFileFactory.INSTANCE.getFile(filename));
        System.out.printf("Analyzing %s ...%n", filename);
        System.out.println();
        resource.deserialize();

        System.out.printf(
                "Resource plan index range [%d, %d]%n",
                resource.getMinPlanIndex(), resource.getMaxPlanIndex());

        for (String device : resource.getDevices()) {
            System.out.printf(
                    "device %s, start time %d (%s), end time %d (%s)%n",
                    device,
                    resource.getStartTime(device),
                    DateTimeUtils.convertMillsecondToZonedDateTime(resource.getStartTime(device)),
                    resource.getEndTime(device),
                    DateTimeUtils.convertMillsecondToZonedDateTime(resource.getEndTime(device)));
        }
        System.out.println();
    }
}
